Fault locating method for overhead line of power distribution network based on fault indicator

A fault indicator and overhead line technology, applied in the direction of fault location, fault detection according to conductor type, information technology support system, etc., can solve the problems of prolonging fault finding and repairing time, long distance, etc., to achieve accurate fault location, The effect of improving power supply reliability

Active Publication Date: 2019-04-26
CHINA UNIV OF MINING & TECH (BEIJING) +1
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  • Abstract
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  • Claims
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Problems solved by technology

For overhead lines, if there are fewer segments, the distance between adjacent switches will be longer, which virtually prolongs the time for fault finding and repairing

Method used

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  • Fault locating method for overhead line of power distribution network based on fault indicator
  • Fault locating method for overhead line of power distribution network based on fault indicator
  • Fault locating method for overhead line of power distribution network based on fault indicator

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Embodiment Construction

[0023] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] The invention discloses an accurate method for an overhead line of a distribution network based on a fault indicator. The method includes the following steps:

[0025] (1) Modeling the distribution network overhead primary equipment network;

[0026] (2) At least one fault indicator is installed on the line tower between the distribution network switch or adjacent switches, and the fault indicator monitors the feeder current in real time;

[0027] (3) Take the fault indicator as the secondary equipment, and carry out the association modeling with the primary equipment; set two attributes of "main equipment" and "auxiliary equipment" for each fault indicator to describe the correspondence between the fault indicator and the primary equipment relationship and installation location, the two attributes of the fault indicator "mai...

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Abstract

The invention discloses a fault locating method for an overhead line of a power distribution network based on a fault indicator. The method comprises the steps that (1) primary overhead equipment forthe distribution network is subjected to network modeling; (2) the fault indicator is taken as secondary equipment, and the secondary equipment and the primary equipment are subjected to associated modeling; (3), according to a conventional distribution network fault locating method, and when occurring, faults are located between adjacent switches; (4), if the fault indicator is installed betweenthe adjacent switches of the line, faults are accurately located based on the fault indicator, and the faults are located between adjacent pole towers provided with the fault indicators. According tothe accurate method for the overhead line of the power distribution network based on the fault indicator, the problem that how does the fault indicator taken as the secondary equipment participate intopology modeling of the power distribution network is solved, the purpose of accurate fault locating for the overhead line of the power distribution network based on the fault indicator is achieved,and the method is beneficial for applying and popularizing an FA function of a power distribution automation system and improving the power supplying reliability of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering and relates to a method for accurately locating a distribution network fault. Background technique [0002] After a fault occurs in the distribution network, if the fault can be diagnosed and accurately located in time, it is of great significance for rapid repair of the fault, shortening the fault processing time, and improving the reliability of the power supply. [0003] The diagnosis and location of distribution network faults can only be located before the adjacent switch. For overhead lines, if there are fewer segments, the distance between adjacent switches will be relatively long, which virtually prolongs the time for fault finding and repairing. [0004] The present invention aims at the problem that fault location is not accurate enough due to the lack of sections of the overhead lines of the distribution network. By installing the fault indicator on the electric pole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/086Y04S10/52
Inventor 黄汉卿谭志海
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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